Roasting apparatus



May 226, 1942i I H. J. KENINEDYY 9 ROASTING APPARATUS Filed Jan. 5, 1938 6 Sheets-Sheet 1 FIG. 1 A FIG.2

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Ill '21 INVENTOR HAROLD J. KENNEDY ATTORNEY May 26, 1942. H. J. KENNEDY 2,284,096 ROASTING APPARATUS Filed Jan. 5, 1938 6 Sheets-Sheet 2 PIC-3.5 FIG.6

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y 1942- H. J. KENNEDY 2,284,096

ROASTING APPARATUS Filed Jan. 5. 1938 e Sheets-She et s loo I I l INVENTOR 1 HAROLD J. KE NEDY ATTORNEY y 1942- H. J. KENNEDY 2,284,096

ROASTING APPARATUS Filed Jan. 5, 1958 6 Sheets-Sheet 4 FIG..1.

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|NVENT OR HAROLD J. KENNEDY ATTORNEY I May 26, 1942.

FIG. 16

H. J. KENNEE J Y ROASTING APPARATUS Filed Jan. 5, L938 6 Sheets-Sheet 6 INVENTOR I HAROLD J. KENNEDY BY? a ATTORNEY Patented May 26, 1942 UNiTED STATES PATENT-TO FFICEJFIQ ROASTING APPARATUS Harold J. Kennedy, Larchn ont, N QY. A Application January 5, 1938, Serial No. 183,415

16 Claims. (o1. ai s) The invention relates to roasting apparatus, more especially adapted to the roasting of green coffee and. various other kernels such as nuts, popcorn and the like.

The invention has for an object the provision of a roasting apparatus of this nature which shall be particularly compact andportable; 2.150, a roasting apparatus which may be constructed at relatively low cost; 7

Another object of the invention resides inthe provision of roasting apparatus having a. minimum of parts, and embodying a'stationary roasting cylinder with rotatable stirrer means located therein. v

A further object of the invention is to render the various operations involved substantially automatic, the actual period of roasting being under control of a suitable timing device which initiates at the desired roast the discharge of the material into a cooling cylinder and finally into a storage drawer or bin from which it may be withdrawn as required, while in the' meantime a charge has been supplied to a measuring hopper associated with the roasting cylinder. v

A still further object -of the invention is to restore within the roasting cylinder after delivery of a charge therefrom the maximum temperature of the heating gases.

Another object of the invention is to so construct a roasting apparatus that the discharged product may be received directly by a storage drawer positioned conveniently below a counter or the like and upon which the said apparatus may be located for operation without cutting or damaging the counter in any manner.

The invention has for a further object. the provision of suitable ventilating means for the interior of the apparatus, together withmeans for cleaning and cooling the spent gases.

The invention has for its object, also, certain features of construction which will hereinafter be more fully set forth, and whereby a simple and efiectively operating mechanism is secured.

In carrying out the invention, a frame for supporting the mechanism is surrounded by a suitable housing or cover member which is provided at the top with a supply or storage bin with open-' ing and adapted to deliver into a measuring hopper, located at the top of the frame, the material to be roasted. Thereis provided at the lower portion of the cover an outlet guide or chute designed to empty into a storage bin or drawer which may be mounted beneath a counter or the like supporting the entire roasting apparatus, and said drawer is adapted to receive'and store with cover removed and portions broken away.

the roasted and cooled and cleansed material from the roasting and coolingv apparatus. This apparatus includes a roasting cylinder fixedly supported on the frame'and a cooling cylinder rotatably mounted thereon.

The control of the movements of the material into and from theroasting cylinder is effected by means of an oscillatable valve element, inturn subject to a suitable timing element; and the degree of roast to which a charge of the material is subjected while in the said roasting cylinder is also controlled by said timing element through determining the length of time the charge is subjected to heated gases passed therethrough. Provision is madeto cleanse the vapors resultingfrom the roasting operation andalso to affordv a stream of cooling air' over the material during its cooling period in the cooling .cylind er, prior to discharge therefrom.

The nature of the invention, however, will best be understood when described inconnection with the accompanying drawings, in which;

Fig. l is a front elevation of the roaster ap paratus, and Fig. 2 a sideelevation thereof, as mounted upon a counter or like support.

Fig. 3 is a rear elevation of the apparatus; and Fig. 4 is a plan thereof with a portion of the storage bin broken away and the heating chamber shown in section.

Fig. 5 is a front elevation of the mechanism with cover removed and portion of heater cover broken away and with part of the roasting cylinder shown in section. V

Fig. dis a side elevation of the mechanism,

Fig. 7 is a rear elevation of the mechanism with cover removed.

' Fig.8 illustrates the electricalcontrol and timders, and shows also the charging and'the discharging mechanism associated with the former. Fig. 12 is a detail, fragmentary elevation of the timed control mechanism and drive mechanism.

Figs. 13 and 14 are respectively a side elevation and a front elevation of a valve elementJ Fig. 15 is a fragmentary vertical section of endof drawer 2-3.

' adapted to' fit over'the entire mechanism and with it to rest upon a suitable support such; for

example, as a counter 22 or the like from which the roasted material isto .bedispen'sed. {Therefj I.

is associated with said counter immediately be; lowthe same a suitable drawer "or'bin 23 for storing the roasted material as it is delivered from the roasting apparatus, for example, into a forwardlyinclined mouthpiece 24, at the outer There provided over the front or dispensersideofthehousing to this end'an apron or chute 25-tb direct the discharged material' into the receiver mouthpiece 2 4. A drawer26 passes through this apron and is designed to receive chair and other waste material from theiroas'ted product during its cooling in a cooling cylinder, hereinafter set forth and located immediately above :said drawer, which drawer isfdesign'ed to "rest also on the said counter..= I. l

Plate 2| has an opening t to expose. a plu- 'rality ofswitches 3|, and'an opening 32 to expose a selector 'switch'33,'the former for intro ducing the operating current, as supplied through a conduit 34, and the latter being adaptvertically and at right angles to each other; and are secured together by means of the various angle pieces 41 and 48. Plate 44 is carried, furthermore, by two. supporting legs 50 and the plate 46 by a leg said legs displacing the frame from the counter 22 to aflord space for accommodating the chaff drawer 26 and other parts of the apparatus. 7

On the one. side of the upright plate 46 is mounted the roasting cylinder 41 and the cooling.

cylinder 42, together with an operating motor, while upon the opposite side is attached the drive mechanism and the control mechanism for regulating the introduction of material into the roasting cylinder, its discharge therefrom into the coolingcylinder, and the eventual discharge from the latter. The measuring hopper 31 for thematerial is alsolocated on said opposite side of the plate 46 as well as the cooling and vapor cleansing apparatus.

.The' -roasting ylinder 4| is closedat its opposite .ends'by-headsorend plates-52 and 53,

I Fig. 11, respectively, mounted over-a shaft 54 ed for controlling thedegree of heat applied by the heaters during the roast-all of which will be hereinafter more fully described.

The top of housing is provided with a depressed or pan. portion for storing asupply ofthe raw material, and along the back is provided an opening 55in the bottom of the pan through which the raw material may be' discharged at thefpro'per time into a measuring hopper31 located immediatelybelowsaid opening. The top of the v hopper is normally closed by means ofa slotted slide having'the openings 38, Fig. 12, designed to register with corresponding openings 39 provided inatop platen of the hopper. 1 v V 3 This slidel normally seals the hop'p'er from the material in thepan 35; and when the slide is moved, as will hereinafter be more fully set forth,

to register th'e'slots 38 and 39, the raw material will feed'into the hopper 3'! until'the desired charge has been secured, as; determined by its dimensions, whereupon the slide will'be reciprocated back toits sealing-61f position. subsee delivered therefrom into the "roasting cylinder 4| and when a'roast has been completed, it descends .to the coolingcylindr 42 where it is 'suitablycooled and the chaif'removed therefrom tivecylinders' and to'r'etain the charge in the roasting cylinder for the time necessary to obtain the desired roast'thereof, the following mechanism is provided, said mechanism being designed to b'e'supportedon'three plate's'44, 45, and 46,

Fig. 12; respectively. The first-named plate; is horizontally disposed and the two other plates constituting the longitudinalaxis of the roasting cylinder. 'Withg-this shaft is designed to be rotateda plurality of stirrer elements; spaced axiallyalong'the said shaft and slidable axially therefalong. The stirrers 'to this end -are carried by hubs 55 and. 56 having juxtaposed flanges 51 and 58, respectively, between whichand over the shaft is mounted a spring 59 tending to maintain said 'hubs apartl The latter are secured to the shaft 54 and for axial displacement thereon as by meansof respective-pins 60 and 5 6| passing through the shaft and through corresponding pairs of slots 52 and 63in-the hubs. will enable, the stirrers to accommodate themselves to temporary obstructionsin the mass of material within the cylinder. 1 The stirrers which areconstituted as a pair of longblades 65 and66, and a'pair of short blades 61, 58, Fig. 10,"are further so mounted as to have radial play to also accommodate themselves to temporary obstructions in this direction; and,-moreover,

mayoscillate slightly; i. To'this end,.'the respective pairs of blades or scrapers 65, 66, and 61, 68 aremountedin the case of the longer blades at'the outer flattened ends f69,10 and '|I --'I2, respectively, of rods radially movable in tubular elements TI, 18 and 15580;". extending radially outwardly from the axis of shaft'54, and carried bythe hub 55in parallel planes. Similarly, for. the pair of 'shorter blades 61, 68, tubes BI, 82 and T83, B4'support the rods Withlfiattened ends 8586 and 8|-88. To permit of this radialdisplacement ofa blade, the corresponding tube, for ex'ample,the tube 11, isprovided with a slot, 89 into which projects a quently t measured r in t pp r is r; pin 99 extending outwardly from the correspending. rod bf fiattened end H. The mounting of a' blade on the rods, moreover, is such as to allow ofJlost motioneso that a blade mayrock freelyonfits supporting rod which in turn may reciprocate Jradially in the corresponding tube.

The" particular arrangement of these stirrers thusflaccommodates the same toanyirregularities-in the inner'surface of theroastingcylinder against which'the stirrers may operate, andany wedging action also is 'obviated'through the freeom 'prmit'ted'a stirrer.

1 Rotation'is imparted to the said shaft 54 as will be hereinafterset forth; and there is mounted about said shaft-a dis kyalve device for oscil-" lation-thereonin-controlling-arr opening in the i'iprightplatelli and through which the material to be roasted is introduced from the'measuring hopper into the cylinder, having a similar opening 96, Fig. 10, in its corresponding nd plate but at a lower level so that the material will flow therein by gravity. The valve device controls also an outlet opening 91 provided in the head of the roasting cylinder for discharge of the roasted material therefrom into the cooling cylinder 42 which is located immediately below the same and rotatably mounted at the lower portion of wall 46.

The discharge from the roasting cylinder through opening 91 is into a chute 98, the outer wall of which is attached to plate 46, and its inner wall being constituted by the one head 99 of a casing or cover I for the cooling cylinder, said cover at the opposite end being closed by a further head IOI. There is provided in the head 99 an opening I02 communicating with the bottom of the chute 98 through which the roasted material enters the cooling cylinder.

The said disk valve device comprises a plate I05 having the sector portion I06 designed to operate over the opening 91 and a duct portion I01 having an outlet I08 to cooperate with the inlet 96 of the roastingcylinder and an inlet I09. The inlet end of the duct fits an opening in a segment H0 and said inlet I09 is designed to cooperate with the opening 95 in the plate 46. Segment H0 is held away from the disk member I05 as by means of springs III, and a post II2 attached to plate I05 passes through segment I I0 for receiving a link to oscillate the disk valve member, as will hereinafter be set forth. Both the segment H0 and the disk I05 are pivotally mounted on the shaft 54.

Provision is made to'oscillate the valve member about the shaft 54 to position it in accordancewith the various operations. Thus, as indicated in the dash-line position, Fig. 10, it is in the position corresponding to the charge-roasting phase, the sector portion I06 covering the discharge opening 91 and disk I05 the charging opening 96. To discharge the roasted material, disk I05 assumes the position indicated by the dotted lines, Fig. 10, wherein sector I06 uncovers opening 91. To charge the cylinder with material to be roasted, the disk returns to the position shown in the dash-dot lines, in which position the opening 96 in the cylinder and the opening 95 in the plateare brought into registry with the tube I09 to convey the raw material from the hopper to the cylinder.

Rotation of the stirrers in said roasting cylinder and of the cooling cylinder is effected from an electric motor I I5 through intermediate mechanism and when the corresponding switch of the bank of switches 3I is closed, this rotation not being subject to the control mechanism.

A heater device is associated with the roasting cylinder 4| and comprises a casing I20 having a grid I 2I of electric heating units behind which is located a fan I22 to blow over said heaters the air and vapors in said casing and in the cylinder M which communicates with the said casing through openings I24 and I25, the casing and cylinder having an enclosing insulating hood I23 sealing more or less the entire roasting portion and heating means. When the apparatus is in use, the heat is constantly on for the roasting cylinder, as in closing another of the switches 3| for the heating surface, Fig. 9; and the heat may be increased for various roasts through cutting in further units by means of the selector switch 33, as is well understood. a

Also-,the electric motor II5'is constantl oper ating when the apparatus is in use and is'controlled by one of the switches 3I. The said motor rotates continuously the drive shaft I26 ;v and on this shaft is secured a, suction fan I21 and a pulley I28. The latter, through a belt I29, drives a further pulley I30 on shaft I3I for the fan I22. On this shaft is mounted the impeller of a blower I32, the purpose of which and the fan I21 will hereinafter be set forth.

When the novel apparatus is in action, and as has hereinbeforebeen noted, the various fans,

blowers, andheating coils will be continuously in operation, as well as the cooling cylinder which is constantly rotated from the drive shaft I26 through intermediate mechanism including the worm and worm wheel I35, a countershaft I36 and the pairs of bevelled gear wheels I31, I38, with connecting shaft I39. ,It will be observed, also, that the stirrers within the roasting cylinder are also being constantly rotated.

Provision is made for the intermittent actuation of the feed mechanism to the measuring hopper, the discharge of a charge therefrom into the roasting cylinder, the discharge from the latter into the cooling cylinder and the final delivery from the latter to the storage bin or drawer23, with a predetermined timingof the roast period as well as of a reheat period for the roasting cylinder. Reference being had more especially to Figs. 11 and'12 of the drawings, the said countershaft I36 is constantly rotating and, through the bevelled gears I40, rotates the shaft 54 and the stirrers mounted thereon. At its upper end, the said shaft I36 is provided with the clutch half I4I, the other half I42 of theclutch being electromagnetically controlled, as will be hereinafter set forth, from a solenoid I43. -When the clutch halves are in engagement, rotation is communicated to a further shaft I45 carrying worm I46 which, in turn,,engages a worm Wheel I41 adapted to rotate the shaft I48. On the latter shaft, to rotate therewith, is a notched disk I49 and a cam element I50. The former is designed'to be engaged by a bell-crank detent I5I and the latter by one end I52 of a rocker arm having an opposite end I53 designed to engage the arm I54 on the rock shaft I55 controlling the opening and closing of the discharge door I56 of the cooling cylinder, which door is connected with the said rock shaft I55 through a link I51. A spring I58 normally holds the hinged door I56 closed, this corresponding to the position of the arm I54 shown in-full lines, Fig. 12, the broken line position being that for the open position of the door, as indicated in Fig. 15. From the shape of the cam shown, it will be noted that the nose I60 of said cam provides for a more or less abrupt opening and closing of the said door when the cam and disk are rotated.

At the same time and as a result of the action of'said nose, the slide in the top of hopper 31 is reciprocated to admit a charge of the raw material into the measuring hopper.- This is effected through the action of an arm'I6I secured on the rock shaft I62 oscillated by the end I52 of the rocker arm. I

As the disk member I49 continues to rotate, de tent I5I also will be thrown out of the notch of the disk and the bell-crank rocked thereby to displace a link I63 connected. therewith at one end and whose opposite end is connected to a mercury switch I64,'.pivoted to the plate 46, to

rock the same to the position shown in broken of the switches 3|. This camhas alower-dwell lines and bridge switch.

operation of an additional mercury switch I65,

also mountedon the plate 46. This is effected-"by means of the connectingrod II 3 which is pivoted to the said disk at one end and'wh'ose other end is pivoted to the post I I2 of'the valvedevice controlling the supply of raw material to and its discharge from the roastingcylinder. As the said disk rotates, a reciprocatory. motion will 'beimparted to the said pin for oscillating the valve device; and at the same time and when said pin II2 has'reached the lowest point in its travel, the pin will engage one arm I61 of a lever pivoted to plate 46. The other arm I68'of the said lever carries the said switch: I 55which, when ro'cked to the position shown in the-broken lin'es, opens a-circuit shown more particularly in Fig. 8. 1

Reference being had tothis figure, there is indicated a cam I drivenbyasuitable timing device; such as the well-known-synchronous'type of electric clock, indicated at I1I,-operated from a suitable source of power under-control of one portion for the greaterproportion of its periphery and a higherportionflli, which may-beadjustable to vary the proportion of therespective dwellportions of the cam, as=is well understood. Thesaid cam I10 is designed to rocka mercury switch I14 to two positions correspondingto the different dwell portions of the cam. At the lower-dwell portion, switch I14 assumes the position indicatedin full lines in the drawings;

. and, when on the high portion1I12 of the cam;

the switch-will assumethe position shownjin brokenflines,-the former'position corresponding to the ,period that the charge is maintained within the roasting cylinder and subject to theroasting action of the heated gases passedthereover, as hereinbefore described. 5 4 1 1 'Tothis end, switch I14 is included incircuit with the solenoid I43 and with a suitable source of current, indicated at 'I15. When the-cam is in the position shown, no current will pass'to solenoid "I43; but when theraised portion -I12 becomes eifectiveswitch I14 will be tilted tothe broken-line position. Current is then supplied to the solenoid I43fthroughalead--I16, the contacts 'I11 of switch I14, and a further lead I18. This lead, itwill be noted, includes the contacts I19 of switch I65, which contacts, in the position shown, close the circuit through said-switch so that solenoid I43 will be energized tofthrow in the clutch halves MI and I42 andstartrotation of disk I 49. Before the cam I10operates-on the lower-dwell portion, switch I64 will have been tilted, through disengagement of the detent I5I, to close a further circuit to the solenoid through contacts I80 of said switch, which contacts are included ina lead -I8I to thesaidsolenoidflirom contacts I82 at the endof switch I14 opposite the contacts I1'l thereof. l

The latter switch, when returned to the. position shown in full lines, will, inclosing the circuit to the said solenoid, also initiate a further rotation of disk I49 after switch I has been' tilted to the-position shown in broken lines, and which oould otherwise cause theicircuit to the solenoid to be-interrupted. This interruptionof the circuit'to'thesaid solenoid then does not occur until detent I'5I againdrop's intothe notch of adisk,

' whichinterrupts the1circuit at'contact I80 of said switch I 54. By thi arrangement, the Lchargelwill beretainedin' "the roastingpylinder' throughout the entire period as determined by' the low-dwell portion ofthe cam, and the. roasting cylinder will be. empty. and recovering temperatureduring the period the high-dwell portion of the cam is active. ItiWill be understood thatwhenthe highdwell portion of cam "I10 moves mercury switch I14 to the position shown by the ,broken lines, thefisole'noid will be energized and the clutch halves. engaged until pin II2 reaches the lowest position of its travel. At this time, contacts I19 of switch I are broken and the solenoid circuit is interrupted, which allows the clutch halves to disengage and stop-all -motion of the control mechanism until mercury switch I14 is returned to the position shownin solid lines, when the solenoidwill again be energized and clutch halves engaged to'continued control of the mechanism operation until the complete rotation '01 disk I49 has'been completed;

The circuit-maintaining switch I64 does not prevent interruption of the solenoid'circuit when contacts I19 are broken since these contacts are broken at a'time when the current flows through contacts I.11,'that is to say, when the mercury .tube I14 is in theposition indicated by the dotted lines and the high-dwell portion of the camisioper'ativc. Contacts I80 receive current from the'contacts I82" of the tube I14 when the latter is resting .on' the'low-dwell portion of the cam. Circuit I8I and switch I 64 are provided for the purpose of maintaining the control cycle until one complete cycle (or revolution) of notched disk I49is accomplished.

Following through a complete cycle of operations, the control elements will be assumed in the position indicated in Fig.1 8, with the respective mercury" switches, detent, and pin locations as shown in full lines. This corresponds to the conclusion of the roasting period, with disk valve member I05 located in its intermediate roasting position. During a predetermined arc of its lowdw'ell portion thels'cam" I10is .efiective for determining :the roasting: period of the charge, said cam rotating ina clockwise direction; and when theproper time interval for. a roast has elapsed,

the-:high-dwell portion I;12 of cam I-10 will be-.

lines, opening thereby the solenoid circuit at contactxIl9 for causing rotation of'disk I49 to cease. e

This rotation of the disk I49 is not resumed until. the lower-dwell .portion of calm I10- again becomesiactive. At this stage, switch I14-returns material in passing through-its-uppermost -location (shown by the dash-dot'lines, Fig. 10), then ceases. This restores the conditions for 'restarting the cycle when the high-dwell portion of cam I12 comes into action; 7

During the roasting operation, it will be understood, of course, that gases will be evolved from the material being roasted; and provision is made 15 to remove these from the roasting cylinder 4 I, as through a venting tube I90 which delivers the same into a condensing chamber WI and in the bottomjof which is provided a layerof water I92 as in a pan I92. The level of this water therein is determined by a pipe I93, there being provided also a drain pipe I94 to the condensing chamber for draining out dirty water and for filling the water pan. Condensing chamber I9I is connectedthrougha pipe I95, which extends from 25 slightly above the water line of the water in the bottom of said chamber to just below the intake I96 of the blower I32. 'This blower delivers the gases into a radiator I91, exposed to the atmosphere at the backof the apparatus, and discharges the same slightly above the water-line of the water at the bottom of said radiator. The fan I21 is arranged to blowair over the said radiator to cool the same. The discharge from the radiator is then led through a duct I98 connected with said radiator into the cooling cylinder 42, and from the same through an opening 7 I99 in thecooling cylinder cover into the space between the mechanism and the surrounding v The air within the case ,20 is also continuously recirculated by blower I32 through radiatorl91, duct I98 and the cooling cylinder 42, thus keeping the inside air and gases of case 20 relatively cool. In continuously blowing this air and gases against the water in the bottom of the-radiator I91, any solids in the gases will cling to the surface of the water. Thegases leaving the cylinder during the first part of the roast consist of steam and the ofiensive odors and vapors developed from the green beans, and .are condensed. and

dissolved in condensing, chamber I! to be run off in the form of a liquid through the drain I94. Those gases that are not recoverable by cooling and dissolving and which areevolved during the latter part of the roast, are allowed .to leave the case at the joint where case 20 rests on the counter. Since there is only a small quantity of such gases and they have the pleasant aroma of roasted beans and have no moisture or stickiness;

such small amount will in no way be objectionable but, rather, because of the pleasant odor, willserve to advertise the roasting operation to the customers.

Three adjustments to control the degree of roasting are possible. Thus, the cam I10 may be set to determine the number of minutes the material is roasting and the temperature of the re-' covery period; the-amount of heat generated by m u ne hopp r. The first of these adjustments 7 5 'is made at the time of installation of the'apparatu's, and'the second and third adjustments'are made by the operator and take care of voltage fluctuations and the amount of moisture in the green material. V

In connection with the degree of heat developed by the heater I2I provision may be made to insure against excessive temperatures, particularly when no charge is in the roasting cylinder as in initially warming the apparatus. For example, a thermostat 299 may be located in the vent connection I99 and designed, in mannerwell understood, to cut in or out one or more of the heating units, as the unit 2M, of theheating grid. U t, v

The volume of the hopper 31 may conveniently be altered by hinging portions 205 and 206 of its respective side walls to the body of the hopper. The said portions are then attached to rods 201 and 208 slidably engaging nuts 209 and 'ZIIl re-. ciprocable'on oppositely threaded portions 2H and 2I2,'respecti'vely, of a spindle 2B which is mounted'for rotation in a bearing 2 I4 secured to 'the-hopperbody and extending through the wall 'ofhousing 29. A removable operating handle or knob 2I5 at the outerend of saidspindle serves for rotating the spindle when adjusting the I volume of said hopper.

lpRoasting apparatus, comprising a chassis, a sealed stationary roasting cylinder fixed to said chassis, means located within the roasting cylinder for agitating raw material, a vent from said cylinder and means to relieve therethrough excess vapors from said cylinder, means to provide a heated atmosphere within the "roasting cylinder to heat therein a charge of raw material, a cooling cylinder rotatably mounted on the chassis below said roasting cylinder and means case 20.

to di'rect'cooling air through said cooling cylinder,

together with means to supply periodically a charge of raw material to the roasting'cylinder and to deliver-the charge when roasted to the cooling cylinder.

2. Roasting apparatus, comprising a chassis,

a sealed stationary roasting cylinder fixed to said chassis, means located within the roasting cylin'der' for agitating raw'material, a vent from said cylinder and means torelieve therethrough excess vapors from'said cylinder, means to provide a heated atmosphere within the roasting cylinder to heat therein a charge of raw material, a cooling cylinder rotatably mounted on the chassis below said roasting cylinder, together withmeans to supply periodically a charge of raw material to the roasting cylinder and to deliver the' charge when roasted to the cooling cylinder, and means to condense and cool said vapors, together with means to direct the same then through said cooling cylinder.

3. Roasting apparatus, comprising a chassis embodying an upright plate with an opening provided therein,-a stationary roasting cylinder and a rotatable cooling cylinder mounted at one side of the plate, the former above the latter and having two openings, one of which is adapted to receive a charge through the opening in the I plate, and the other adapted for discharge of said charge to the cooling cylinder, means located within the roasting cylinder for agitating raw material, means to provide a heated atmosphere within the roasting cylinder to heat therein a through one. or the other cylinderxopeningsand having an .outlet.communicating'with the formertopening,1-means for-in.- terrupting free communication between the associated openings of 1 the plate androasting cyl- V inder and for controlling the other opening of I said roasting cylinder, together with mechanism carried by'the plate at the measuring hopper sidejthereof Ifor operating said interrupting means to afford communication alternatively of the said roasting'cylinderi openings.

4. Roasting apparatus, comprising a chassis, a stationaryroasting cylinder fixed to said chassis, means located within' the roasting cyl'- inder for agitating raw material, and a cooling cylinder carried by'the, chassis, means to provide a'heated atmosphere within the roasting cylinder to heat therein a charge of raw material; .a"sou1ice"of Y supply of the material to be roasted." and a measuring hopper connected therewith having. an'outlet, and a valve member oscillatable aboutTithei longitudinal axis of said roasting cylinderi and operatively associated with the hopperoutl'et and. said i'oa'stingcylin'der for delivering ,a'fcharge' from the hopper into the lowing materialto discharge from said bin into the hopper; o 7. Ingroastingflapparatus; the combination with a support; a chassis; adapted, torest thereon, aroasting cylinderiand'a'measuring hopper for raw'materialiassociated: therewith and both carried by-the chassis, means to provide a heated atmospherewlthin-the roasting cylinder to heat therein a-f'charge V ofyrawmaterial, a cooling .cy1-

inder carried by the chassis,- together, with, mechanism for supplying a chargeof materialto be roasted from the hopper tosaid roasting cylinder and discharging'the same therefrom into the cooling, cylinden; together with means to deliver the cooled charge- -afrom said-cooling cylinder; of a separable'enclosing housing adapted to rest over the'mechanism'upon the support, one wall of said housing being-provided with-an apron affording a-chuteoverhangingnn'edge of the support, and a storage drawer for; roasted material discharged from the cooling cylinder, said drawer being movably-mounted with respect to roasterfandfor" delivering the charge when timed means for actuating said valve. L

5. Roasting apparatus, comprising 'a"chassis embodying. an upright plate withan opening provided therein,- ia' roasting cylinder and a cooling ber located between the said plate and the roasting'cylinder and movable. over". the opening in saidfplateiand overfthe juxtaposed end of the cylindennndftimed: means to oscillate the valve member rto? afford alternatively communication betweeniith' said plate" opening'and'one'of the --openingsfof the r'oasting' cylinder and to'uncover theother opening thereof. r a 6;::In;ro"asting" apparatus, the combination withfa'" support; a chassis! adapted to rest thereon;raroasting'cylinder and a measuring hopper for'raw 'material associated therewith and both carried'by the chassis',means to provide a heated atmosphere within the'roasting cylinder to heat therinaf charge of raw materialga cooling cylindercarriedbythechassis, together with mech anism for supplying a charge of material to be roasted-from the hopper to said roasting-cylinder and discharging the same therefrom into theic ooling cylinder, together with means to deliverthe cooled charge from said cooling cylin der; of, a separable enclosing housing adapted to" rest, over1 the mechanism uponthe support and provided atnthe topwith a storage bin for raw material, theobottom of saidbin having an openingjuxtaposed to the top of said measuring hopper for discharge of raw material thereto,

and intermediate means normally interrupting flow of -material from the bin;into: the hopper,

' togetherwithmeans'controlled by said mecha- I nism to operate said intermediate means for al- '7 od of,roasting, said timing means determining *roasted into'the cooling c'ylinder, together with the said 1support;below -the sameand "having a vforwardly inclined mouthpiece-juxtaposed to the v bottom of said-chute; 1 Y

8. In roasting s, apparatus; thecombination with "a support,-'a chassis-adapted to rest there- 'on, ,a roasting cylinder'an'd" a measuring hopper .for raw material associated-therewith and both 30' carriedJoy the-chassis, means-to provide a heated atmosphere within the" roasting cylinder-- to heat therein a charge -of-raw -*material,- a cooling cylinder carried by the chassis; together with mechanism for supplying a charge: of material to be roasted from the -hopperto said roasting cylinder and" dischargingthevsame' therefrom into the cooling cylinder, together witlrmeansto de- :liver' the cooled charge-from; saidcooling cylinderpof a separable enclosing housing-adapted to rest over. the mechanism upon the support, one wall of said housing bein providedw-ith an apron affording a'chute; overhanging an edge of the support, achaff drawer extending through said chute below the cooling cylinder and 'rest- 15 ing upon said support anda storage drawer for roasted. material discharged from the cooling cylinder, -saiddrawer -being movably mounted with respect to the said support below 'thesame and havinga -forwardlyinclinedmouthpiece juxtaposed to thebottom'of said chute.

9.-Roasting apparatus, comprising a chassis, a stationary roastingvcylinder-and a measuring hopper for raw material associated therewith, means located within the roasting cylinder for agitating raw material, means to provide a heated atmosphere within, thenroasting cylinder to heat therein a chargeofraw material, and a cooling cylinder rotatably carried by the chassis,

' together with mechanism for supplying a charge of material to be roasted fromthe hopper to said roasting cylinder and discharging 'the same therefrom into thecooling cylinder, means to discharge the roasted material fromflthe cooling'cylinder, and means to operatesimultaneously the mechanism for supplyinga charge of material. to the hopper ,and. the means for, discharging roasted material from the cooling cyl- V inder; l

free of a charge of the material, and including a rotatable, timed cam element, a double-throw switch actuated thereby and a solenoid included in circuit therewith, together with clutch mechanism controlled by the solenoid for operation of the charging and discharging mechanism.

11. In roasting apparatus, comprising a roasting cylinder adapted to receive a' charge of material to be roasted and to discharge the same therefrom, and means to provide a heated atmosphere within the cylinder to heat the charge: timing means for determining the period of roasting, said timing means determining also a reheating period for the cylinder when free of a charge of the material, and including a rotatable, timed cam element, a double-throw switch actuated thereby and a solenoid included in circuit therewith, together with clutch mechanism controlled by the solenoid, rotatable means driven through said clutch for operation of the charging and discharging mechanism, and a further and circuit-maintaining switch in circuit with one side of the first-named switch and controlled by the said rotatable means.

12. In roasting apparatus, comprising a roasting cylinder adapted to receive a charge of material to be roasted and to discharge the same therefrom, and means to provide a heated atmosphere within the cylinder to heat the charger timing means for determining the period of roasting, said timing means determining also a reheating period for the cylinder when free of a charge of the material, and including a rotatable, timed cam element, a double-throw switch actuated thereby and a solenoid included in circuit therewith, together with clutch mechanism controlled by the solenoid, rotatable means driven through said clutch for operation of the charging and discharging mechanism, a further and circuit-maintaining switch in circuit with one side of the first-named switch and controlled by the said rotatable means, and

r a third switch in circuit with the other side of the first-named switch for interrupting the cir- I cuit to the solenoid and controlled by able means.

13. Roasting apparatus, comprising a chassis, a sealed stationary roasting cylinder fixed to the chassis, a vent from said cylinder and means torelieve therethrough excess vapors from said cylinder, a heating chamber connected with the roasting cylinder and including electrical heating units, a fan associated with the heating chamber to draw gases from the roasting cylinder and direct them over the heating unit and back into said cylinder, said relieving means incuding a condensing chamber for the vapors from said cylinder and connected with the cylinder by said vent, a duct extending from said chamber, together with a blower whose inlet is in juxtaposition to the outlet end of said duct.

14. Roasting apparatus, comprising a chassis,

said rotata sealed stationary roasting cylinder fixed to the chassis, a cooling cylinder rotatably mounted on the chassis, a vent from said cylinder and means to relieve therethrough excess vapors from said cylinder, a heating chamber connected with the roasting cylinder and including electrical heating units, a fan associated with the heating chamber to draw gases from the roasting cylinder and direct them over the heating unit and back into said cylinder, said relieving means in- I eluding a condensing chamber for the vapors from said cylinder and connected with the cylinder by said vent, a duct extending from said chamber, together with a blower whose inlet is in juxtaposition to the outlet end of said duct, a cooling chamber communicating with the discharge from said blower, and the outlet of said from said cylinder, a heating chamber connected with the roasting cylinder and including electrical heating units, a fan associated with the heating chamber to draw gases from the roasting cylinder and direct them over the heating unit and back into said cylinder, a separable enclosing housing adapted to rest over said mechanisms, 7

said relieving means including a condensing chamberfor the vapors from said roasting cylinder and connected with the roasting cylinder by said vent, a duct extending from said cham- Y ber, together with a blower whose inlet is in juxtaposition to the outlet end of said duct, a cooling chamber communicating with the dis-, charge from said blower, the outlet of said cooling chamber being connected with a casing surrounding the cooling cylinder and the said casing being provided with an outlet into the separable enclosing housing for the apparatus.

'16. In roasting apparatus: the combination of a roasting cylinder having an inlet opening through which a charge of material to be roasted is received by said cylinder and an outlet opening for discharge of roasted material from said cylinder, together with valve means to control said openings, and means to provide a heated atmosphere within the cylinder to heat the 7 charge; with a timer, a cam driven by the timer having two dwell portions, a multi-contact mercury switch actuated by the inclined portions connecting the dwell portions of the cam to cause the switch to assume two positions, and electrical means including a solenoid-actuated clutch con trolled, by the said switch in its different positions, together with rotatable means operative when the solenoid is energized and an element oscillated by the rotatable means for operating the valve means. v p

HAROLD J. KENNEDY. 

